Hot-air producer and blower.



A. SCHAEFPER. HOT AIR PRODUCER AND BLOWER. APPLICATION FILED NOV. 29, 1909.

999,880, Patented Aug. 8, 1911.

2 SHEETS-SHEET 1.

Witnesses: Invenidr:

A. SGHAEPFBR.

HOT AIR PRODUCER AND BLOWER.

' APPLICATION FILED H0129, 1909.

Patented Aug. 8, 1911.

2 SHEETS-SHEET 2.

g n h 6 h r.

Witnesses QM Jnve nfor:

AUGUST sonanrrna, or raanxroar-on-rnn-mam, GERMANY.

HOT-AIR PRODUCER AND BLOWER.

Specification of Letters Patent.

Patented Aug. 8,1911.

Application flied- November 29, 1909. Serial No. 530,466.

Toall whom 'it may concern:

Be it known that I, AUGUST SOHAEFFER, a citizen of [the German Empire, residing at Moselstrasse 40, Frankfort-on-the-Main, Germany, have invented new and useful Improvements in Hot-Air Producers and Blowlar suspendin ers, of which the following is a specification.

.-.My invention relates to improvements in compressed and warmed air blowers of the class which is used in warmed or hot air douches and the objects of my invention are,

first, to providea device of the class referred to permitting to conveniently adjust and at pleasure change the temperature, quantity and force of the emitted air-current or blast, second with this object in view, to cause a division of the air in two currents of different temperatures and the ultimate mixture of these currents, all within the hollow, round body hereinbelow referred to; third, to provide means to openor obstruct and thus regulate the ingress of air into the said body; fourth to provide means permittin to change the force or pressure of the emitted blast; fifth to provide for the supply of the means for the operation of the mechanical parts in the said body; sixth, to

provide for the convenient and secure suspension and manipulation of the round body, and, seventh, to further improve the hot-air-blower'bfy providing means permitting the admixture of the blast with. aromatic or medicinal matter. I attain these objects'by the construction and arrangement of parts as herein specified and illustrated on the drawings herewith in which- Figure 1 is an elevation of the apparatus, partly in vertical section, suspended in the way hereinbelow referred to; Fig.2 is a top-view of the ventilator-box hereinbelow referred to; Fig. 3 is a portion of the annudevice hereinbelow referred to, showing t e position of parts ready to receive the head of a button secured in the shell ofthe apparatus; Fig. 4 is a similar view showing the said button inserted; Fig.

' 5is a side view of aortion of the said annular'suspending. device showing the perforation and slot hereinbelow mentioned; Fig. 6- is a vertical section through the hollow round body intended to receive the mechanical devices hereinafter described and set forth,'the said body being shown upside down and turned at right angles to the position'shown in Fig.1; Fig. 7 is a detail may be used for ther -relative sizes and shapes that they have to view, in section, illustrating the disposal of parts for the introduction of electric wires at a certain place and other parts hereinbelow mentioned; Fig. 8 is a similar detail view showing the disposition of certain parts at a place opposite to the former; Fig. 9 1s a sectional view of the discharge which lation of the force of the emitted blast; ig. 10 is a vertical transverse section through the gauze-box and the, end-piece of the discharge tube hereinbelow referred to; and Fig. 11 is a side view of my improved device showing it suspended from a telescopic stand.

In the said drawings a is a hollow round body which may be a globular shell of any suitable material and may be composed of two or more corresponding parts; I) represents a motor, the main-shaft b of which carries a ventilator or rotatory fan 0 inclosed by a box 01 which may be a cylinder having a lateral discharge opening 9 and in each of the flat portions a circular opening g. To the said ventilator box, on the flat side opposite to the one which is adjoining to the motor, there is attached a heater 6 of any suitable construction. In the bottom of the shell a. there is a discharge piece f and diametrically to the latter the shell is perforated, the perforations It being distributed above the ventilator box and the motor which are together with the heater mounted in the order above set forth and are of such be mounted in inclined position. There is further provided a radial .damper m,

vaulted to correspond in shape with the cir cumference of the shell. The said damper is of such relative size that when adjusted thereto it covers all or the greater part ofthe perforations h. I prefer the damper to be inside of the shell as shown on the drawing,

beingmounted as illustrated and as hereinbelow referred to and adjustable from with- 10:. out.

Any kind of ower may be used for the operation of the motor, ventilator and heater. The drawin s show a conductor ,ofelectricity 1 which is admitted through a male-threaded tubular iece 2 inserted at one end of the horizonta diameter and fixed on the inside of the. shell (1 by means of a nut 3, while on the outside it may be closed by a cap 15. (See Fig. 7 At the other end of the same diameter a tubular iece or journal 7 is inserted which is passed through another male-threaded tubular piece 5secured by a nut 6 inside of the shell a. The portion 7 forms the bearing for the switch-shaft 8 the inner end of which is in the switch-box 0 while the outer end has the switch-handle 9. The said piece 7 is independentlyturnable about the shaft 8 and has on the outer.

end a hand-wheel or other handle n while the inside-end carries one of the ends of the vaulted damper m which is thus rotarily movable by means of the said wheel or handle a. On the outside of the shell as a I 1 scale or dial 16 may be providedindicating temperature of the current or keep it for a time at a certain pre-determined. temperature and while for certain work a strong high-pressure current is necessary and for other purposes a light and only moderately warmed current is required, the devices heretofore in use were not so constructed that all this could be attained with one apparatus. PMy improvements do away with this disadvantage and permit a control and "regulation of the admission and discharge through those perforations WhlCll are at as well as of the-temperature andforce of the emitted air-current.

' In my construction the perforations h in the shell a admit atmospheric air sucked in by the action of the ventilator 0. The air sucked in through those of the perforations which are nearest to and accordmgly'within the action of the heater e-becomes at once heated, before itis received by the ventila admitted? tor, whilethe' air which is bein somedistance from-the heater, that is those which are over the motor, is forced to pass over the several arts of the latter and thus cool these parts efore it is drawn into the ventilator box' which'it leaves again through the opening g near the. discharge piece f, (fSee arrows in Fig.| 1.) Thus there are two 7 air-currents each'of which is designed for and, adapted to fill its particular urp0se..

' heated, while the other keeps the parts 0 the motor cool which would else run'hot. The operation as described is greatl assisted by the round shape of the shellw ich prevents a breaking of the air-current, favors its balling and brings about an aggregation and mixture of the warniand the'cool air-currents before they arrive in and are emitted through the discharge piece f.

While insimllar devices as known. heretofore. only one uniformly strong current of air could be produced and by means of a switch shut off, my invention intends to permit to regulate and at pleasure change the temperature as well as the quantity of the air to be admitted and this I accomplish by providing the aforesaid rotarily movable, vaulted damper m, which may, as aforesaid, be operated by'means of the wheel 02 outside of the shell. As long as the damper is in the position shown in Fig. 1 it is not in action. On turning it a trifle upward a number'of the perforations h, it will be covered and accordingly the quantity of air oing to the heater becomes smaller while t e quantity of air passing over. the motor remains the same and thus the cold current becomes redominant and reduces the temperature 0 the mixture of the two currents. By turning, however, the damper far enough tocover the portion of the perforations which are above the motor while those above the heater are uncovered, the'cold current is cut off and the temperature accordingly increased. Thus by turning the damper so as to cover :all or a certain portion of the perforations the admission. of the air as well as the temperature' may at pleasure be regulated, such regulation being facilitated and rendered accurate by the dial 16 permitting to read {from the same the exact position of the ,damper when it is inside of the shell a. 5 (See Fig. 11.) I prefer the damper to be of isuch size, that when itzis turned so that it is E'just above the middle of the two currents, ;there are still uncovered perforations on geach side, so that there is some air admit- Eted, though in considerably smaller quan Etity, while the temperature remains normal.

of air thus reduced and emitted through the Edis'charge. f the same may be constructed in the way illustrated by Fig. 9 which shows it as a tubular piece adapted to go Eover the end of the rigid joint-piece r of ithe flexible'tube and having an elastic in- Qverted annular clamp it behind which there is provided'a pair of rings a, 'v concentric, but placed crosswise to each other and trans- :versely within the dischargeiece f,the bores :of the said rings being of di erent diameters Tov increase the pressure of the quantity and there being provided on the outside an adjusting device w permitting to place the ;-bore-of any of the said rings in alinement :with the discharge passage. Suppose, the. piece f has been .placed over the Joint-piece ';r of the flexible tube and the apparatus discharges a quantity ofair re uced as above described, the rings u,'v may be so adjusted that the smaller passa e is open and accordingly the res sure of t e reduced quantity of air forced through the narrowerpassage becomes thereby stronger than that of the normal quantity, if the same were air-current may emitted through the larger opening. By

.this way any quantity o device is used as a hot-air douche for mebe increased or reduced in force as circumstances may require. Thus whenever my dicinal-purposes the operator is in a position to at pleasure adjust or change the quantity of air to be emitted as well as its force or pressure and its temperature.

In the joint-piece r of the flexible tube there maybe placed a removable gauze-box consisting of a small tubular piece the two Openings of which may be covered each by a piece of gauzey, the box being insuspension and unimpeded manipulation. I-

tended to receive any material adapted to saturate the passing air-current which may be conducted to the spot or place intended for treatment.

My device may be provided on the out-- side with any means permitting its free prefer for this purpose the parts shown on the drawings in which 17 is an annular tube which is in its upper portion, on the lower side, provided wlth a circular perforation 10, having a slotted extension 11' embraced by a collar 12. provided with a similar circular opening and slot adapted to receive a button or head or ball 70 on a neck mounted on the globular shell a opposite to the discharge. By inserting the said button'or ball is into the opening 10 and moving it along in the slot 11 the apparatus may be securely suspended in the annular piece 17. and the security against accidental dropping may be increased by giving the collar 12 a further turn'to cover pieces 13 and 5, respectively. The tube 17 may, of course, be given a vertical, horizontal or any other position and it may be replaced by any other kind of body suitable for the purpose. i I

.While 'I have described and in the? drawings illustrated what I consider as a very practical embodiment of my invention I wish to state that I do not limit myself thereto as it is obvious that various chan es may be made without departing from tie spirit of my invention.

I claim 4 1. A hot-air producer and blower comprising the combination of a hollow round body, partially perforated, means of admission, circulation and discharge of air within the said body, a heater within the Said body and a vaulted damper adapted to' be adjusted to cover part of the perforations, the said body having a discharge opening and the saidperforations being distributed in the shell ofthe said body diametrically to the said discharge opening, substantially as described and f r the purposes set forth;

2. A hot air bltpwer and producer com-.

prising the combination of a hollow round body, partially perforated, means of admission, circulation and discharge within thesaid body, a heater within the said body, a

vaulted damper adapted to beadjustedto H cover aportionof-the perforations and a discharge-piece adjustable for different passage widths, the said perforations being distributed in the shell of the said body diametrically to the opening for the said discharge piece, substantially as described and for the purposes set forth.

3. A hot-air producer and blower com prising the combination of a hollow round body, partially perforated, a motor, a ventilator and a heater within the said body and mounted in such relative position to the same and the perforations therein that, part only of the latter are within the'direct'action of the heater, the said body having a discharge opening and the said perforations being distributed in the shell of the said body. diametrically to the said discharge opening, substantially as describedand for the purposesset-forth; 1

4. The combination of a hollow round bodypartially perforated," containing a motor, a ventilatorsand a heater'which are mounted in such relative position to the same and the perforations therein that part only of the latter are within the direct action of the heater, and an adjustable radial vaulted damper-adapted to cover any part of the said perforations, the shell of the said: -body having a discharge opening and the said. perforations being distributed in the said shell diametrically to the said discharge opening, substantially as describedand for the purposes set forth.

5. The combination of a hollow round body, partially perforated, a motor, a ventilator and a heater which are mounted within the said body in such relative position to the same and the perforations therein that part only of the latter are withinthe direct action of the heater, an adjustable radial vaulted damper, rotarily movable and adjustable to cover anyeof the saidperforations, the said damper opening and the said perforations being distributed in the said shell diametrically to the said discharge opening, substantially. as described and for the purposes set forth.

6. The combination of a hollow round body partially perforated, a motor, a ven tilator and a heater which are mounted within the'sa'id body in such relative position to the same and the perforations therein that part only of the latter are within the direct ing inside of the said body and.- adjustable from the outside of the same, the shell of the said body having a dischargeaction of the heater, the shell of the said body having a discharge opening and the said perforations being distributed in' the said shell diametrically to the said discharge opening, of a radial vaulted damper rotarily movable and adjustable to cover any of the said perforations, the said damper being mounted inside of the-body and adjustable from the outside of the same, and a dial on the said outside adapted to indicate the position of the damper, substantially as described and for the purposes set forth.

7. A hot-air producer and blower consisting of a hollow round body, partially perforated, means of admission, heating, circulation and discharge of air, a rotarily movable, radial vaulted damper adjustable to cover any of the perforations, the shell of the said body having a discharge opening. and the said perforations being distributed in the said shell diametrically to the said discharge opening and a discharge comprising the combination of a tubular dischargepiece in the said discharge opening, an elastic inverted annular clamp therein, concentric rings of different widths transversely placed to each other within the said discharge piece, and adjusting means for the said rings, substantially as described and for the purpose set forth.

81A hot-air producer and blower comprising a hollow round body, partially perforated, means of admission, heating, circulation and discharge of air, a rotarily movable, vaulted damper adjustable to cover any of the perforations in the said body, the shell of the said body having a discharge opening and the said perforations being-distributed in the said shell diametrically to the said discharge opening and an outlet inthe said discharge opening comprising the combination of a tubular discharge-piece, an elastic inverted annular clamp therein, con-- centric rings of different widths transversely placed to each otherand transversely turn-1 able within the said discharge-piece, .an adjusting device on the outside connected withthe said rings and a flexible tube attachablei to the saiddischarge piece, substantially as described and for the purposes set forth.

opening and the said perforations being disti'ibuted in the said shell diametrically to the said discharge opening, and an outlet in the said discharge opemng comprising the combination of a tubular discharge piece containing a gauze box adapted to receive and hold'any aromatic or medicinal matter, substantially as described and for the purposes set forth. l L

10. A hot-air producer and blower consisting of a hollow round body, partially perforated,. means of admission, heating,

circulation and discharge of air, the shell and a number of perforations diametrically of the said body having a discharge opening disposed to the said discharge opening, a I

vaulted radial damper, a male-threaded tubular piece at one end of the horizontal diameter of the hollow round body and secured by a nut inside of the said body, a conductor of electricity passed through the said tubular piece, another male-threaded piece at the other end of the same diameter, also secured by a nut within the hollow round body, a journal in the saidv last-mentioned tubular piece, the said journal having on the outside-end a handle while the inner end carries one of the ends of the aforesaid vaulted damper, a switch-shaft in the said journal, a switch-box connected therewith inside of the hollow body and a handleconnected therewith on the outside end, the

said journal and switch-shaft being severally turnable independent of each other, substantially as described.

In testimony whereof I have signed my a name to this specification in the presence of two subscribing witnesses.

AUGUST SCHAEFFER.

Witnesses EMIL Rauscn CARL GRUND. 

